The T1BH1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.8 to 2 GHz, Average Power 250 W, Average Power Forward 250 W, Insertion Loss 0.25 dB, Isolation 25 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T1BH1 can be seen below.